“Tough choice. The price difference is $2000 which isn’t insignificant! Though the 5D is a breakthrough in pricing for a full frame camera, it’s still out of the reach of many photographers at $3300. For those doing studio work or landscape and editorial shooting, the 5D will be a great camera and I’m sure it will sell very well indeed. For anyone shooting a lot of action, the slightly more expensive ($3999) EOS 1D MkII N, with it’s 8.5fps frame rate and 48/22 JPEG/RAW buffer will still probably be the camera of choice. For penurious amateur wildlife shooters who never have a lens long enough to capture their subjects, the 20D probably remains the camera of choice due to its higher pixel density and significantly lower price. The 1Ds Mk II will still command the attention of those wealthy enough to buy it and who need the durability of a fully weather sealed camera with the ultimate in full frame image quality. However I’d guess that the 5D might well eat into 1Ds MkII sales as the $4700 price difference is more than a lot of people will be able to justify”